Ref. No. 2238/44-2382
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
It is permissible for a woman to apply fragrance on prayer mat. This may create modesty in the prayer. Similarly there is no harm in applying fragrance on the special prayer clothes for a woman while praying inside the house. Light fragrance should be used so that its fragrance does not reach a non-mahram and does not cause temptation. However, if there are some non-mahrams in the same house, then she should absolutely avoid using perfume.
۔"عن أبي موسى : عن النبي صلى الله عليه و سلم قال: كل عين زانية، والمرأة إذا استعطرت فمرت بالمجلس فهي كذا وكذا -يعني زانية-". (سنن الترمذي 5 / 106
And Allah knows best
Darul Ifta
Darul Uloom Waqf Deoband